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Message-ID: <5e9a31dfdfd843469c51106fce9ea353@AcuMS.aculab.com> Date: Tue, 28 May 2019 11:06:26 +0000 From: David Laight <David.Laight@...LAB.COM> To: 'Tony Lindgren' <tony@...mide.com>, "linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org> CC: Dave Gerlach <d-gerlach@...com>, Faiz Abbas <faiz_abbas@...com>, "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>, Keerthy <j-keerthy@...com>, Nishanth Menon <nm@...com>, Peter Ujfalusi <peter.ujfalusi@...com>, "Roger Quadros" <rogerq@...com>, Suman Anna <s-anna@...com>, Tero Kristo <t-kristo@...com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, Rob Herring <robh@...nel.org>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org> Subject: RE: [PATCH 01/12] bus: ti-sysc: Support 16-bit writes too From: Tony Lindgren > Sent: 27 May 2019 13:14 > We need to also support 16-bit writes for i2c in addition to the reads > when we start configuring the sysconfig register for reset and idle modes. > > Signed-off-by: Tony Lindgren <tony@...mide.com> > --- > drivers/bus/ti-sysc.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c > --- a/drivers/bus/ti-sysc.c > +++ b/drivers/bus/ti-sysc.c > @@ -100,6 +100,13 @@ static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np, > > static void sysc_write(struct sysc *ddata, int offset, u32 value) > { > + if (ddata->cfg.quirks & SYSC_QUIRK_16BIT) { > + writew_relaxed(value & 0xffff, ddata->module_va + offset); > + writew_relaxed(value >> 16, ddata->module_va + offset + 4); Should that be + 2 ??? > + > + return; > + } > + > writel_relaxed(value, ddata->module_va + offset); > } David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
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